Tamesis Construction
First class construction and project management in the Thames Valley.

Tamesis Construction Ltd is a sister company of Tamesis Properties Ltd, based in Henley on Thames. Tamesis Properties works with with local land and property owners to build the finest new homes.

Are you contemplating a new build, extension or loft conversion and finding the process overwhelming? Tamesis Construction is here to help. We understand the challenge of juggling work and family schedules with the complexities of planning, finding reliable contractors, and overseeing the project. Tamesis take the hassle away from you by taking on full responsibility for the management of your project from start to finish, including design if needed.

Projects are completed on time to the highest standards. We handle every aspect: maintaining control and managing relationships with contractors to deliver both a stress-free experience and exceptional results.

Our Focus

  • Stress-free project management:

    From planning to finding reliable contractors, Tamesis takes full responsibility, making the process less overwhelming for clients.

  • High-quality and timely results:

    Dedicated to excellence, Tamesis ensures projects are completed on time and with exceptional outcomes.

  • Cost-saving insights:

    Our experience provides valuable cost-saving insights, optimising spending for clients.

  • Trusted & safe work environment:

    Tamesis’ comprehensive management ensures a safe workplace, giving clients peace of mind throughout the construction journey.

About James Ransom

James Ransom is the Managing Director at Tamesis Construction. After 22 years in the industry he is a seasoned property development professional. He has honed his expertise by working with renowned companies such as St George, CALA Homes, and Millgate Homes. James's unwavering commitment to excellence is evident in his meticulous attention to detail and exceptional project management skills. He leverages his extensive experience to oversee all facets of a project, ranging from its conception to the construction phase and ultimately its successful completion.

Client Testimonials

"James and his team were experienced, efficient and hardworking when we refurbished and fully extended our house in Richmond: I’d highly recommend them”
SW, Richmond
James Ransom is always our go-to for all residential property repairs and renovations. Their wealth of experience and expertise means we know we will always get an honest assessment and excellent workmanship that is reasonably priced.
AK, Henley-on-Thames
"For our side extension, James advised on all aspects of the build and did an excellent job throughout the process from planning to construction. The attention to detail and high standards resulted in an excellent build."
WK, Henley-on-Thames